JPH046081A - Device for mixing two kinds of liquid - Google Patents

Abstract

PURPOSE: To keep a mixing ratio of two kinds of liquid as much as possible in a uniform manner without having any relation to a capacity of soft drinks every time the soft drinks are made by a method wherein a time controlling type feeding valve for use in controlling a feeding of liquid of which flow rate is adjusted is controlled in clock in response to an operation of a distributing device. CONSTITUTION: Condensed beverage is sucked from a storing container 14 into a piston pump device 16 through a feeding opening 27. When an eccentric driving device 34 is further rotated, at first, an upper shaft of a control piston 29 reaches a range of the feeding opening 27 so as to close the feeding opening 27. As a control piston 29 further continues a lifting motion, a stopper section 37 between the control piston 29 and a supplying piston 26 also operates, resulting in the movement of the supplying piston 26 moved upward together with the control piston 29. At that time, the condensed beverage sucked at first is carried to a central feeding passage 39 within the control piston 29 through a side passage 38 within the control piston 29. The condensed beverage 23 is directed from the central feeding passage 39 in an outward direction, its amount is controlled by a flow rate adjuster 11 and a feeding valve 12 and the beverage is mixed with the fed-out aerated water and reaches an area where beverage is produced.

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention relates to a dispensing valve in which one liquid, especially a liquid with a small mixing proportion, is dispensed in small amounts in a single position by a dispensing device, and the other liquid is time-controlled. The present invention relates to a device for mixing two types of liquids at a constant mixing ratio such that the flow rates are adjusted through the liquids and the liquids are respectively introduced into mixing regions.

[Conventional technology]

This type of device is an automatic beverage dispensing device for mixing carbonated water with a concentrated beverage to make a soft drink, and dispenses one of the two liquids, the concentrated beverage, from its storage tank in a controlled manner. , the other liquid, carbonated water, is specifically passed through for pouring out for the mixing process.

The mixing ratio of carbonated water and concentrated beverage in the soft drink obtained by this type of automatic beverage dispensing device should be as close as possible to the same standard as the finished beverage of the same type sold commercially in bottles. to have
BACKGROUND OF THE INVENTION Concentrated beverages as well as carbonated water need to be dispensed with high precision in terms of their volume in order to achieve a precise mixing ratio and a high quality of the beverage, which has to be very precise.

Regarding automatic beverage dispensing devices, dispensing devices with a metering chamber for dispensing concentrated beverages are known (German Patent Application No. 2544671, German Patent Application No. 3409).
(See Publication No. 124 and Publication No. 3622745). According to such a dispensing device with a dispensing chamber capable of dispensing a unit volume with very high precision, concentrated beverages can be dispensed with sufficient precision.

In order to make a soft drink by mixing carbonated water with a concentrated drink dispensed in small quantities at a single point, water stored under pressure in a so-called carbonator is added by adjusting the flow rate via a flow rate regulator. A device is known that performs volume control and dispensing using a dispensing valve that can be controlled over time (see German Patent Application No. 3430953).

The piston pump device can also be used to dispense the concentrated beverage from its storage tank into the mixing area and mix it to make a soft drink. Although piston pump devices for this require higher operating costs than known dispensing devices with dosing chambers, they allow the concentrated beverage to be dispensed in a very small single position with high dispensing cycles and therefore Beverages can be individually (in fact almost steplessly) mixed in fixed quantities.

The means for dispensing the WA condensed beverage on the one hand and the carbonated water on the other hand for mixing and preparing the beverage are selected and optimized depending on the respective technical requirements. However, since these means necessarily have different and specific properties, care must be taken to ensure that these different properties do not cause problems with the desired mixing ratio of the finished beverage. In other words, care must be taken to ensure that a constant mixing ratio is obtained regardless of the amount of soft drink and the number of times it is dispensed at a single location.

[4111! [Means for Solving the Problems] The object of the present invention is to solve the above-mentioned problems by introducing one liquid through a metering device and the other liquid through a time-controlled dispensing valve, each at a flow rate of 11. The object of the present invention is to provide a device in which the mixing ratio of two liquids to be prepared is maintained as uniformly and accurately as possible, irrespective of the volume of the soft drink produced in each case.

[Means for Solving the Problem] According to the invention, this object provides that a time-controlled dispensing valve for controlling the dispensing of a liquid whose flow rate is adjusted is clock-controlled in response to the actuation of a metering device. achieved by.

[Operation and Effect] According to the present invention, both liquids to be mixed with each other are specified by the dispensing device by clock-controlling the dispensing valve that controls dispensing of the liquid whose flow rate is adjusted according to the operation of the dispensing device. If both liquids are dispensed in small quantities at a single point and summed in order to dispense and mix substantially continuously, the mixing ratio is can be maintained accurately. That is, it has been found that when liquid is dispensed by adjusting the flow rate, different conditions occur compared to a method in which the liquid is dispensed by continuously adjusting the flow rate while opening and closing a time-controlled dispensing valve.

This condition may lead to inaccurate desired mixing ratios. This effect may seem disadvantageous since it is magnified by the clock control of the pour flow, but it actually acts in the same way for each loading and shutting process, so it can occur many times. You can control it at any time. With the measures according to the invention, these irregular but controllable influences can have a constant relationship to the total dispensing volume and are therefore uniform regardless of the respective dispensing volume. can be controlled.

In an advantageous embodiment of the device according to the invention, the dosing device is a piston pump device, which pumps one liquid, for example a concentrated beverage in a beverage automatic dispensing device, continuously in small quantities at any single position. It can be poured into

In this connection, it is advantageous if the time-controllable dispensing valve is actuated by the drive mechanism of the dosing device.

This actuation can be done purely mechanically. However, it is also possible to design the device according to the invention in such a way that the contact switch, which in this connection is controlled by the drive mechanism of the volume dosing device, controls the electromagnet that activates the time-controlled dispensing valve.

[Example] Hereinafter, an example based on the present invention will be described in detail with reference to the drawings.

As can be seen in FIG. 1, a carbonator 2 is disposed in a housing 1 of an automatic beverage dispensing device, thermally insulated by an insulating case 3. The carbonator 2 is supplied with necessary water from a water source via a supply pipe 4 in a known manner, and carbon dioxide (Co) is introduced in gaseous form via a pipe 5. Inside the carbonator 2, water is mixed with carbon dioxide gas to produce carbonated water. The carbonator 2 is cooled by a cooling coil 6 which together with a compressor 7, an evaporator 8 and an aperture 9 form a compressor/refrigerator.

A carbonated water outlet pipe 10 is arranged in the lower region of the carbonator 2 . According to the control of an electromagnetic pouring valve 12 connected downstream to a flow rate regulator 11, the carbonated water is poured into a concentrated beverage 13.
The soft drink is also dispensed through the mixing area where the soft drink is introduced.

The concentrated beverage 13 is stored in a tank 14 housed in a storage chamber 15 of the housing 1 of the automatic beverage dispensing device. The concentrated beverage 13 is dispensed via a drive device (not shown) through a dispensing device 16, which is a fixed component of the tank 14, and mixed with carbonated water, thereby producing a soft drink.

Carbonated water pouring pipe 10 is installed on the lower container wall of the carbonator 2.
The heat conductive element 17 is joined in a plane to the area of the storage chamber 1.
Tank 14 for concentrated beverage 13 as wall part 18.19 of 5
It is guided to the extent of.

The structure and operation of the dispensing device 16 will now be described with reference to FIG. 2, and the drive device will be described with reference to FIG. This dispensing device is a piston pump device and has a housing 23, which is held in the housing 1 of the automatic beverage dispensing device so that it can be installed from the front side at the dispensing point of the automatic beverage dispensing device. . For this purpose, the housing 23 has a groove 24 in which the projection 25 of the housing 1 engages in the shape of a horseshoe. This housing 23
A supply piston 26 is arranged therein so that it can be displaced axially between the stops. These stoppers allow
A dispensing stroke is defined which determines the amount of concentrated beverage 13 to be dispensed for each operating cycle. An introduction opening 27 in the housing 23 extends towards the schematically illustrated storage container 14 and a central through opening 2 in the supply piston 26.
8, so that the shaft of the control piston 29 is guided in an axially displaceable manner. The axial movement between the control piston 29 and the supply piston 26 is likewise limited by stops 36,37.

The control piston 29 is driven via a lever 30 which engages with its end 31 in a groove 32 of the control piston 29 in a fork-like manner. The lever 30 has a shaft 33 which is fixedly metered in the housing 1 of the automatic beverage dispensing device.
The lever 30 is rotatably driven in the direction of the arrow by an eccentric drive device 34 surrounded by a second lever arm 35 of the lever 30 in a fork shape. When the eccentric drive 34 is rotated further in the direction of the arrow from the position shown in FIG.
4 into the piston pump device 16 via the inlet opening 27. When the eccentric drive device 34 rotates further,
First, the upper shaft of the control piston 29 reaches the area of the introduction opening 27 and closes it. When the control piston 29 continues its upward movement, the control piston 29 and the supply piston 2
6 act together, so that the supply piston 26 is moved upwards together with the control piston 29. In this case, the first sucked-in concentrate drink bones are conveyed via a side channel 38 in the control piston 29 to a central dispensing channel 39 in the control piston 29 . The concentrated beverage 23 heads outward from this central pouring path 39, and the flow rate! It reaches a region where it is mixed with the carbonated water which is quantitatively controlled by the l1wi device 11 and the pouring valve 12 and made into a beverage. In this way, any number of working cycles can be carried out directly in succession and their number counted, resulting in very precise metering of the dispensing volume of the side working cycles and of the entire working cycle. be able to.

Then the device for driving the two piston pump devices 16, 16', i.e. injecting the two concentrated beverages contained in their respective tanks 14 in the storage chamber 15 of the housing 1 of the automatic beverage dispensing device. The third drive device
This will be explained with reference to the figures. The electric motor 40, ie, a reversible electric motor, is connected to a drive shaft 43 via a gear mechanism 42. By means of a suitable electric circuit, the electric motor 40 can be rotated in both rotational directions, so that the drive shaft 43 can also be driven in both rotational directions. This drive shaft 43 is rotatably guided through two hollow shafts 44 and 45, which are rotatably journalled in the housing 1 and are each provided with an eccentric drive 34, 34'. . The drive shaft 43 has an elastic band 47 wrapped around the flange portion 46, which elastic band 47 extends onto the hollow shafts 44 and 45, respectively.

The elastic band 47 is wrapped around the flange portion 4 of the drive shaft 43.
6 and the hollow shafts 44.45 respectively act as freewheel couplings, the connection between the flange part 46 and one of the hollow shafts 44.45 and the decoupling of the respective other hollow shaft from the flange part are effected by winding. The attachment is related to the winding direction of the elastic band 47. According to the direction of rotation of the reversible electric motor 40, the hollow shaft 44 with the eccentric drive 34 and also the drive lever 30 are therefore driven while the hollow shaft 45 is disengaged, or the eccentric drive is driven while the hollow shaft 44 is disengaged. A hollow shaft 45 with a mounting M34' is driven. By means of the electronically or electrically controllable direction of rotation of the reversible motor 40, the selection of the piston pump device to be driven for selective dispensing of the two stored concentrated beverages can therefore be effected.

Two control cams 48.49 and 50.51 are likewise fixedly arranged on the hollow shaft 44 and on the hollow shaft 45, respectively. These control cams act on switching contact devices 52.53 or 54.55.

The control cam 48.50 acts via the switching contact device 52 or 54 on the control circuit of the reversible electric motor 1140, so that this reversible electric motor 40, in each case, during the drive period is driven by a hollow shaft 44.50 with an eccentric drive 34.34'. 45 continues to rotate until each is driven and returns to a predetermined rest position. It is therefore ensured that each piston pump arrangement f16 is served by a full drive cycle.

The control cam 49.51 has its associated switching contact device 53.
．． Via 55, an electromagnetic system (not shown) is actuated in control technology, which actuates a dispensing valve for the carbonated water to be mixed with the concentrated beverage. In the carbonator 2, this carbonated water is stored under high pressure and usually cooled, and when the pouring valve is released, the flow rate is controlled by the flow rate regulator 11 and the overpressure inside the carbonator 2 causes the carbonated water to be poured out into the mixing section. and is clocked according to the operating cycle of the piston pump device 16 starting from the control cam 49.51.

In contrast to the above, it is also possible for the control cams 49 to 51 to act purely mechanically on the carbonated water tap.

FIG. 4 shows the drive device in FIG. 3 in conjunction with a circuit diagram suitable for this device. This circuit diagram shows the wiring connecting the power supply to the drive motor 40 via a contact switch 52.54 and the spout valve 12 via a contact switch 53.55.
of! Wiring connected to the magnet device is shown. As drive motor 40, a reversible synchronous motor with two coils and three connection terminals is used, as is known in the art. Its central connection terminal contacts one wire of the 1is, and each of the remaining connection terminals is bridged with each other via a phase shift capacitor and selectively connected to the other wire of the power supply via a contact switch 52.54. be done. When the contact switch 54 is actuated in the direction of the arrow, for example to make a soft drink, the connection terminals on this side of the contact switch of the drive motor 40 are connected directly, and the connection terminals on the opposite side are connected via a capacitor. , the electric motor 40 is therefore driven via the elastic band 47 in such a way that the hollow shaft 45 is actuated together with the cam 50.51 and the eccentric drive 34. This contact switch 5
As soon as actuation in the direction of the arrow 4 no longer occurs, this contact switch 54 is held in the adjustment position via its cam 50 until the cam 50 again reaches its starting position.

Controlled by the cam 51 and via the contact switch 55, the carbonated water dispensing valve 12 is opened per revolution of the cam for a time period determined by the cam shape. The drive lever for dispensing the concentrated beverage is driven via the eccentric drive 34 and simultaneously per revolution of the hollow shaft 45!
Performs an actuation movement to dispense a corresponding amount of compressed beverage.

When the contact switch 52 is actuated in the direction of the arrow to make another soft drink, the drive motor 40 has its outer connection terminal applied with the power supply voltage in the opposite direction, so that the motor 40 is rotated in the opposite direction, as described above. The hollow shaft 43 on the opposite side is driven as shown in FIG.

If another DC motor 40 is used, the circuit shown in FIG. 5 is recommended. This is because in this case, the current flow is reversed.

Instead of using one dispensing valve 12, two valves can also be provided, corresponding to different soft drinks and individual contact switches 53,55.

[Brief explanation of drawings]

Figure 141 is a partial schematic cross-sectional view of an automatic beverage supply device that has a carbonator for making carbonated water and a tank for concentrated drinks for mixing with carbonated water to make soft drinks, and Figure 2 is for pouring out concentrated drinks. Cross-sectional view of a piston pump device for
FIG. 3 is a side view of a drive device for two piston pump devices, and FIGS. 41!1 and 5 are electrical circuit diagrams of different embodiments. 100. Beverage automatic dispenser housing 213. Carbonator 11, , ff1l regulator 12, , Dispensing valve 13, , Concentrated beverage dispensing device control piston lenomer 45, , Hollow shaft 53.54.55. ,,contact switch 16,,. 29. 35.

Claims (1)

[Scope of the Claims] 1) A constant flow of one liquid into the mixing zone in small quantities at a single point by a dosing device, and the other liquid at a controlled flow rate via a time-controlled dispensing valve. In a device that mixes two types of liquids at a mixing ratio, a flow rate regulator (11)
The time-controlled dispensing valve (12) for controlling the dispensing of the liquid whose flow rate is regulated via Equipment for mixing. 2) Device according to claim 1, characterized in that the metering device (16) is a piston pump device. 3) Device according to claim 2, characterized in that the clocked time-controlled dispensing valve (12) is actuated by the drive mechanism (44, 45) of the dosing device (16). 4) Device according to claim 3, characterized in that the clocked time-controlled dispensing valve (12) is mechanically actuated by the drive mechanism (44, 45) of the dosing device (16). 5) A dispensing valve (12) whose contact switches (53, 55) are clock-time controlled, which are controlled via control cams (29, 31) by the drive mechanism (44, 45) of the dosing device (16). 4. The device of claim 3, further comprising controlling an electromagnet for actuating.